sick chicken weak eyes,droopy comb, lethargic, eats and drink a little

She has been sick a few days.
I'm not sure if she is able to poop. There is a little white
(urine) poop.
I have her in a bed of straw with a light, and
with food and water available.
Could she be egg bound? She has ben laying for about a year.

 

No, I have never wormed her, even though I purchased wormer last summer.
I have ducks and they kind of complicate things.
I have been giving her a scrambled egg every morning. I do have to force feed
her that. This morning I mixed hot water with laying crumble and they all loved
that (even though they don't love the regular dry crumble) She ate that on her own.
It's kind of like hot cereal on a cold snowy morning. I also found a little green grass,
under the snow and she ate that. She also is drinking fairly well) on her own.
She has had a rough go of it...the roosters seemed to always be after her, so she would hide
or spend the day on the roost. Even now she does not have feathers on her back.
I have a couple of other hens that went through the same thing but have fared better then
she has.
I will try to examine her a little better tomorrow. Her abodomin area has felt maybe a little tight or slightly swollen. By the way...I've even given her the warm bath...hoping she would pass an egg, if there was one there. That was four or five days ago.
I have not been able to feel an egg. I've actually been surprised to find her
still alive, each morning.
I do think she is very thin. Can you worm a sick chicken? What do you think of
using garlic? and Do you have an opinion on DE?
Thank you so much for responding. Your reply was very interenting.
Would love to see her healthy again.